POLICE were called to Bullingdon Prison this morning after a "potential security threat".

Officers were called to the jail at Arncott near Bicester at 8.19am today.

A police statement said: "Thames Valley Police was called at 8.19am today to a potential security threat at HMP Bullingdon.

"As a precaution a cordon was put in place outside the main entrance to the prison while officers carried out an investigation to ensure the safety of the public.

"No threats to the public were found and the matter has now been closed."

Police and the Ministry of Justice have so far been unable to provide further information.